tests: reduce zstd long option to 23 (libarchive#2305)

With 26 and 27, the sub-test is pushing 2G and 4G memory respectively.

There is no particular reason why we need to push for higher limits
here, so let's pick 23 with weights around 0.25G. The test suite overall
is in the 0.25 - 0.5G range and this fits perfectly.

Closes: libarchive#2080

Signed-off-by: Emil Velikov <[email protected]>

Author: evelikov

Diff for: libarchive/test/test_write_filter_zstd.c

@@ -230,12 +230,8 @@ DEFINE_TEST(test_write_filter_zstd)
 	    archive_write_set_filter_option(a, NULL, "max-frame-out", "1GB"));
 #endif
 #if ZSTD_VERSION_NUMBER >= MINVER_LONG
-	if ((int)(sizeof(size_t) == 4))
-		assertEqualIntA(a, ARCHIVE_OK,
-		    archive_write_set_filter_option(a, NULL, "long", "26"));
-	else
-		assertEqualIntA(a, ARCHIVE_OK,
-		    archive_write_set_filter_option(a, NULL, "long", "27"));
+	assertEqualIntA(a, ARCHIVE_OK,
+	    archive_write_set_filter_option(a, NULL, "long", "23"));
 	assertEqualIntA(a, ARCHIVE_FAILED,
 	    archive_write_set_filter_option(a, NULL, "long", "-1")); /* negative */
 #endif